
    <html>
      <head>
        <meta charset="UTF-8">
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.11.1/katex.min.css"></link>
      </head>
      <body> <h1>My document's title</h1><p>A paragraph in my document</p> </body>
    </html>